PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/26-14:42:40
G01     73.4           33.2                6.2 +/-    1.01      10.2 +/-    1.01  0.030 / 0.030
G07     136.1          33.1                8.8 +/-    1.17      14.6 +/-    1.17  0.030 / 0.030
G11     54.8           31.6                6.4 +/-    1.78      10.8 +/-    1.78  0.060 / 0.090
G13     277.1          37.9                6.0 +/-    1.63       9.1 +/-    1.63  0.060 / 0.100
G15     306.9          13.3                5.3 +/-    2.83      13.8 +/-    2.83  0.040 / 0.070
G17     229.6          67.5                7.6 +/-    0.60       8.2 +/-    0.60  0.050 / 0.070
G18     50.5           19.0                6.5 +/-    3.23      14.7 +/-    3.23  0.050 / 0.080
G19     222.4          36.9                8.9 +/-    1.33      13.6 +/-    1.33  0.050 / 0.120
G28     15.3           59.8                7.8 +/-    1.01       8.9 +/-    1.01  0.100 / 0.170
G30     132.9          65.2                7.9 +/-    0.73       8.6 +/-    0.73  0.130 / 0.190