PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/18-03:28:10
G01     79.8           33.2                2.7 +/-    0.75       4.5 +/-    0.75  0.040 / 0.050
G07     132.6          37.8                4.4 +/-    1.04       6.6 +/-    1.04  0.040 / 0.040
G11     61.2           36.5                2.2 +/-    0.88       3.4 +/-    0.88  0.060 / 0.160
G13     285.2          37.1                4.8 +/-    0.76       7.4 +/-    0.76  0.080 / 0.180
G15     308.3          13.9                1.9 +/-    1.85       4.8 +/-    1.85  0.040 / 0.040
G17     222.8          61.9                4.8 +/-    0.59       5.3 +/-    0.59  0.030 / 0.040
G19     219.2          35.9                5.0 +/-    1.32       7.9 +/-    1.32  0.050 / 0.080
G28     7.4            60.6                1.3 +/-    0.52       1.5 +/-    0.52  0.050 / 0.080
G30     126.0          65.5                2.9 +/-    0.72       3.1 +/-    0.72  0.050 / 0.090