PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/13-09:58:10
G01     115.7          20.3                5.3 +/-    1.17      11.5 +/-    1.17  0.030 / 0.020
G07     90.8           63.9                5.5 +/-    0.61       6.1 +/-    0.61  0.030 / 0.020
G08     43.1           26.4                2.6 +/-    2.11       4.8 +/-    2.11  0.120 / 0.230
G09     173.4          18.2                4.4 +/-    1.51      10.1 +/-    1.51  0.110 / 0.210
G11     100.0          41.3                6.6 +/-    0.69       9.4 +/-    0.69  0.070 / 0.190
G13     315.5          22.7                2.6 +/-    1.76       5.3 +/-    1.76  0.070 / 0.200
G17     202.1          29.9                4.6 +/-    1.34       8.1 +/-    1.34  0.120 / 0.200
G18     88.8           22.0                3.8 +/-    1.57       7.9 +/-    1.57  0.130 / 0.190
G28     298.4          58.3                4.3 +/-    1.17       5.0 +/-    1.17  0.030 / 0.040
G30     350.0          70.8                5.8 +/-    0.24       6.1 +/-    0.24  0.030 / 0.040