PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/19-06:57:50
G01     67.8           32.5                5.1 +/-    0.97       8.5 +/-    0.97  0.030 / 0.030
G07     138.7          27.0                8.3 +/-    1.59      15.5 +/-    1.59  0.040 / 0.040
G11     50.9           27.6                3.3 +/-    1.15       6.0 +/-    1.15  0.050 / 0.130
G13     270.7          37.5                7.0 +/-    1.15      10.7 +/-    1.15  0.060 / 0.110
G15     302.4          14.5                1.3 +/-    1.30       3.4 +/-    1.30  0.060 / 0.090
G17     240.5          74.1                7.4 +/-    0.90       7.7 +/-    0.90  0.070 / 0.100
G19     225.7          41.5                5.6 +/-    2.05       7.9 +/-    2.05  0.040 / 0.030
G28     20.8           59.4                5.7 +/-    0.49       6.6 +/-    0.49  0.030 / 0.030
G30     138.4          61.1                9.6 +/-    0.84      10.8 +/-    0.84  0.060 / 0.060