PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/28-01:57:40
G01     106.2          26.0                6.8 +/-    1.41      13.0 +/-    1.41  0.030 / 0.070
G07     108.0          57.7                6.5 +/-    0.34       7.6 +/-    0.34  0.030 / 0.080
G08     42.1           20.8                2.9 +/-    1.64       6.3 +/-    1.64  0.070 / 0.110
G09     175.4          13.8                9.1 +/-    1.59      23.3 +/-    1.59  0.070 / 0.130
G11     90.5           43.1                6.8 +/-    0.75       9.5 +/-    0.75  0.060 / 0.150
G13     309.6          28.3                2.7 +/-    1.66       4.9 +/-    1.66  0.060 / 0.120
G17     206.5          38.1                8.2 +/-    1.51      12.3 +/-    1.51  0.060 / 0.080
G19     209.3          14.3                4.3 +/-    2.92      10.8 +/-    2.92  0.060 / 0.060
G28     321.1          61.3                4.9 +/-    0.57       5.5 +/-    0.57  0.030 / 0.040
G30     47.5           78.1                4.4 +/-    0.65       4.5 +/-    0.65  0.030 / 0.040