PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/13-03:42:30
G01     83.4           32.9                5.5 +/-    1.11       9.0 +/-    1.11  0.040 / 0.040
G07     130.3          40.4                6.9 +/-    0.66      10.0 +/-    0.66  0.040 / 0.040
G11     64.1           38.0                4.0 +/-    0.98       6.0 +/-    0.98  0.160 / 0.250
G13     289.0          36.7                4.7 +/-    1.22       7.2 +/-    1.22  0.270 / 0.300
G15     310.7          12.9                2.4 +/-    1.90       6.3 +/-    1.90  0.070 / 0.050
G17     219.6          59.2                6.0 +/-    1.54       6.9 +/-    1.54  0.080 / 0.040
G19     217.5          33.2                4.6 +/-    1.61       7.5 +/-    1.61  0.050 / 0.050
G28     1.7            61.0                3.1 +/-    0.49       3.4 +/-    0.49  0.040 / 0.060
G30     120.9          68.4                6.3 +/-    0.67       6.8 +/-    0.67  0.060 / 0.080