PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/12-16:43:10
G01     294.7          39.1                8.2 +/-    3.01      12.1 +/-    3.01  0.060 / 0.070
G03     311.4          17.1                8.8 +/-    2.23      20.9 +/-    2.23  0.050 / 0.060
G10     117.2          31.5                9.4 +/-    0.80      15.9 +/-    0.80  0.110 / 0.120
G11     271.4          26.4                9.4 +/-    0.92      17.8 +/-    0.92  0.080 / 0.140
G14     16.9           61.3                9.0 +/-    0.95      10.1 +/-    0.95  0.020 / 0.020
G22     313.4          37.0                9.4 +/-    1.55      14.4 +/-    1.55  0.030 / 0.020
G25     70.6           19.0                8.8 +/-    1.44      19.8 +/-    1.44  0.050 / 0.060
G26     158.0          11.1               -2.7 +/-   38.69      -7.3 +/-   38.69  0.040 / 0.070
G31     140.4          77.2               10.5 +/-    0.99      10.8 +/-    0.99  0.140 / 0.210
G32     48.7           43.6                8.4 +/-    0.97      11.5 +/-    0.97  0.170 / 0.230