PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/08-03:57:50
G02     199.3          20.5                5.4 +/-    2.29      11.8 +/-    2.29  0.050 / 0.060
G06     174.7          49.4                7.7 +/-    0.57       9.8 +/-    0.57  0.080 / 0.070
G13     229.6          14.6                5.6 +/-    1.04      14.0 +/-    1.04  0.040 / 0.040
G17     17.5           62.4                5.3 +/-    0.66       5.9 +/-    0.66  0.050 / 0.050
G19     317.4          71.4                4.4 +/-    0.67       4.6 +/-    0.67  0.210 / 0.440
G24     312.0          27.3                3.4 +/-    2.01       6.2 +/-    2.01  0.200 / 0.350
G28     86.1           40.4                5.0 +/-    0.84       7.2 +/-    0.84  0.050 / 0.040
G30     155.6          13.1                5.2 +/-    1.42      13.6 +/-    1.42  0.040 / 0.040