PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/16-10:42:30
G01     88.6           32.1                4.3 +/-    0.84       7.1 +/-    0.84  0.020 / 0.030
G07     126.8          43.6                5.5 +/-    1.17       7.6 +/-    1.17  0.020 / 0.040
G11     65.8           38.5                3.2 +/-    0.60       4.7 +/-    0.60  0.060 / 0.200
G13     292.7          36.7                3.0 +/-    1.94       4.7 +/-    1.94  0.070 / 0.180
G17     215.1          56.6                4.6 +/-    1.17       5.4 +/-    1.17  0.060 / 0.070
G18     61.1           22.9                2.4 +/-    1.04       4.8 +/-    1.04  0.060 / 0.050
G19     215.5          23.9                6.5 +/-    1.61      13.0 +/-    1.61  0.090 / 0.100
G28     349.8          61.7                2.3 +/-    0.70       2.5 +/-    0.70  0.100 / 0.130
G30     105.8          76.8                4.6 +/-    0.46       4.7 +/-    0.46  0.080 / 0.110