PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/24-04:12:40
G01     109.8          24.0                8.6 +/-    1.70      17.1 +/-    1.70  0.050 / 0.060
G07     102.3          60.0                6.1 +/-    0.77       7.0 +/-    0.77  0.040 / 0.040
G08     42.3           22.8                2.7 +/-    1.73       5.5 +/-    1.73  0.070 / 0.060
G09     175.8          16.8                5.4 +/-    1.98      12.8 +/-    1.98  0.070 / 0.070
G11     94.2           42.2                5.9 +/-    1.08       8.2 +/-    1.08  0.180 / 0.130
G13     312.6          25.7                2.1 +/-    2.11       4.0 +/-    2.11  0.130 / 0.130
G17     204.7          35.6                5.6 +/-    1.36       8.8 +/-    1.36  0.200 / 0.280
G19     208.2          11.4               -2.3 +/-    2.99      -6.2 +/-    2.99  0.170 / 0.300
G28     313.7          60.6                3.1 +/-    1.04       3.5 +/-    1.04  0.090 / 0.110
G30     21.4           76.8                4.2 +/-    0.70       4.3 +/-    0.70  0.110 / 0.090