PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/16-07:43:10
G02     199.7          22.3                4.2 +/-    2.04       8.7 +/-    2.04  0.060 / 0.090
G06     177.0          49.6                7.1 +/-    0.82       9.0 +/-    0.82  0.070 / 0.080
G13     228.3          13.1                3.0 +/-    3.24       7.8 +/-    3.24  0.040 / 0.030
G17     23.3           59.0                4.9 +/-    0.66       5.6 +/-    0.66  0.040 / 0.040
G19     327.9          71.1                4.0 +/-    0.61       4.2 +/-    0.61  0.120 / 0.580
G24     310.8          28.6                3.5 +/-    0.89       6.2 +/-    0.89  0.130 / 0.580
G28     88.8           39.0                7.9 +/-    1.01      11.7 +/-    1.01  0.080 / 0.050
G30     156.6          13.1                4.4 +/-    2.78      11.5 +/-    2.78  0.060 / 0.040