PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/09-11:27:50
G01     79.4           33.2                4.2 +/-    0.62       6.9 +/-    0.62  0.060 / 0.070
G07     132.8          36.9                6.5 +/-    0.60       9.9 +/-    0.60  0.040 / 0.080
G11     58.4           34.5                2.7 +/-    0.92       4.3 +/-    0.92  0.040 / 0.040
G13     283.3          38.0                5.1 +/-    1.26       7.7 +/-    1.26  0.030 / 0.040
G15     313.0          10.2               -9.8 +/-    9.66     -27.2 +/-    9.66  0.060 / 0.100
G17     222.8          63.9                7.2 +/-    1.41       8.0 +/-    1.41  0.060 / 0.110
G18     54.0           20.6                2.6 +/-    1.10       5.6 +/-    1.10  0.050 / 0.110
G19     219.4          30.9                5.2 +/-    1.70       8.9 +/-    1.70  0.050 / 0.130
G28     4.7            60.9                4.6 +/-    0.70       5.2 +/-    0.70  0.080 / 0.270
G30     125.4          70.3                6.3 +/-    0.28       6.7 +/-    0.28  0.070 / 0.210