PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/26-06:42:50
G01     39.3           13.0                2.5 +/-    2.54       6.4 +/-    2.54  0.040 / 0.080
G02     198.8          13.7                3.9 +/-    3.89       9.9 +/-    3.89  0.050 / 0.080
G06     178.4          39.8                7.0 +/-    0.72      10.3 +/-    0.72  0.020 / 0.020
G13     235.2          19.1                4.1 +/-    5.12       9.2 +/-    5.12  0.040 / 0.020
G15     266.3          10.9                3.1 +/-    1.71       8.6 +/-    1.71  0.080 / 0.230
G17     10.9           66.5                3.8 +/-    0.45       4.1 +/-    0.45  0.130 / 0.180
G19     295.3          71.4                4.0 +/-    0.41       4.2 +/-    0.41  0.050 / 0.060
G24     315.5          21.7                2.3 +/-    1.99       4.9 +/-    1.99  0.060 / 0.070
G28     78.1           44.0                5.8 +/-    1.37       7.9 +/-    1.37  0.080 / 0.230
G30     155.0          21.3                6.3 +/-    1.82      13.5 +/-    1.82  0.080 / 0.300