PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/07-03:57:40
G02     199.1          18.7                4.5 +/-    1.58      10.3 +/-    1.58  0.040 / 0.070
G06     175.3          47.3                4.6 +/-    0.77       6.0 +/-    0.77  0.050 / 0.080
G13     231.0          15.8                5.2 +/-    3.30      12.7 +/-    3.30  0.030 / 0.030
G17     15.0           63.8                2.7 +/-    0.47       3.0 +/-    0.47  0.040 / 0.030
G19     310.9          71.6                2.1 +/-    0.72       2.2 +/-    0.72  0.040 / 0.040
G24     313.0          25.9                1.9 +/-    1.42       3.6 +/-    1.42  0.050 / 0.070
G28     84.0           41.4                3.4 +/-    0.82       4.8 +/-    0.82  0.210 / 0.250
G30     155.3          14.8                6.1 +/-    1.80      15.2 +/-    1.80  0.160 / 0.360