PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/27-03:57:40
G01     81.3           33.0                6.3 +/-    0.92      10.5 +/-    0.92  0.050 / 0.070
G07     131.7          36.4                9.0 +/-    0.56      13.9 +/-    0.56  0.040 / 0.100
G11     59.3           35.1                3.9 +/-    0.60       6.2 +/-    0.60  0.080 / 0.120
G13     285.2          38.1                5.3 +/-    1.10       8.0 +/-    1.10  0.080 / 0.110
G15     310.8          12.2                1.9 +/-    1.37       5.2 +/-    1.37  0.040 / 0.060
G17     220.3          63.8                8.0 +/-    0.62       8.8 +/-    0.62  0.040 / 0.060
G18     53.4           19.7                3.7 +/-    1.10       8.1 +/-    1.10  0.080 / 0.230
G19     218.1          32.0                6.4 +/-    1.27      10.7 +/-    1.27  0.070 / 0.250
G28     358.3          61.4                5.5 +/-    0.81       6.1 +/-    0.81  0.030 / 0.030
G30     122.5          71.5                7.2 +/-    0.54       7.5 +/-    0.54  0.030 / 0.030