PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/26-00:57:30
G07     330.4          57.4                5.3 +/-    0.64       6.1 +/-    0.64  0.040 / 0.040
G08     101.9          50.0                7.2 +/-    0.67       9.1 +/-    0.67  0.030 / 0.030
G09     192.3          76.9                7.3 +/-    0.48       7.5 +/-    0.48  0.070 / 0.070
G11     146.9          11.4                6.0 +/-    7.70      16.3 +/-    7.70  0.080 / 0.060
G16     45.4           11.7                2.7 +/-    3.18       7.2 +/-    3.18  0.050 / 0.060
G23     154.9          48.7                7.4 +/-    0.68       9.5 +/-    0.68  0.030 / 0.050
G27     62.2           35.6                5.7 +/-    1.01       9.0 +/-    1.01  0.180 / 0.190
G28     233.3          23.8                5.7 +/-    2.04      11.5 +/-    2.04  0.250 / 0.260
G30     297.8          31.2                5.8 +/-    1.08       9.9 +/-    1.08  0.340 / 0.270