PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/31-15:27:50
G08     310.0          19.4                4.7 +/-    1.47      10.5 +/-    1.47  0.030 / 0.030
G10     328.9          59.6                5.0 +/-    0.33       5.7 +/-    0.33  0.040 / 0.020
G14     216.6          29.4                7.3 +/-    1.63      12.9 +/-    1.63  0.040 / 0.040
G15     46.5           12.9                4.1 +/-    3.05      10.8 +/-    3.05  0.040 / 0.040
G20     33.6           61.2                4.5 +/-    0.86       5.0 +/-    0.86  0.130 / 0.170
G21     132.3          55.0                9.5 +/-    0.57      11.4 +/-    0.57  0.180 / 0.150
G24     72.5           28.4                6.1 +/-    0.84      11.1 +/-    0.84  0.090 / 0.200
G27     281.3          36.7                7.6 +/-    3.22      11.7 +/-    3.22  0.120 / 0.170
G32     221.2          48.6                6.6 +/-    1.47       8.5 +/-    1.47  0.060 / 0.090