PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/27-09:43:10
G01     96.2           30.2                4.3 +/-    1.72       7.4 +/-    1.72  0.050 / 0.030
G07     120.6          49.1                6.5 +/-    0.68       8.3 +/-    0.68  0.040 / 0.030
G11     73.3           40.9                5.1 +/-    0.58       7.4 +/-    0.58  0.060 / 0.120
G13     299.9          34.4                6.0 +/-    2.18       9.6 +/-    2.18  0.080 / 0.110
G17     210.3          50.2                8.0 +/-    1.08      10.1 +/-    1.08  0.040 / 0.040
G18     67.6           24.0                4.3 +/-    0.99       8.6 +/-    0.99  0.040 / 0.050
G19     212.8          18.4                3.9 +/-    1.81       9.0 +/-    1.81  0.080 / 0.160
G28     336.4          61.8                2.8 +/-    0.57       3.2 +/-    0.57  0.070 / 0.150
G30     73.8           80.2                5.8 +/-    0.51       5.8 +/-    0.51  0.050 / 0.140