PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/07-13:42:50
G01     79.6           33.2                6.8 +/-    0.76      11.2 +/-    0.76  0.030 / 0.030
G07     132.7          37.6                8.1 +/-    0.76      12.3 +/-    0.76  0.030 / 0.030
G11     58.7           34.6                5.5 +/-    1.00       8.8 +/-    1.00  0.060 / 0.120
G13     283.6          37.9                7.6 +/-    1.29      11.5 +/-    1.29  0.060 / 0.110
G15     311.4          11.5                3.9 +/-    1.32      10.6 +/-    1.32  0.040 / 0.060
G17     222.6          63.3                9.2 +/-    1.24      10.1 +/-    1.24  0.040 / 0.050
G18     54.8           21.1                5.2 +/-    1.43      11.2 +/-    1.43  0.060 / 0.070
G19     219.3          31.9                8.9 +/-    1.54      14.9 +/-    1.54  0.040 / 0.090
G28     5.7            60.8                7.6 +/-    0.86       8.5 +/-    0.86  0.060 / 0.120
G30     125.0          70.3                8.3 +/-    0.72       8.8 +/-    0.72  0.050 / 0.130