PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/12-19:58:00
G01     254.3          36.6               10.0 +/-    1.56      15.3 +/-    1.56  0.040 / 0.050
G03     316.3          42.4               10.9 +/-    0.63      15.3 +/-    0.63  0.040 / 0.040
G11     240.8          14.2                8.9 +/-    2.64      22.6 +/-    2.64  0.030 / 0.030
G14     57.2           42.8                9.9 +/-    0.91      13.8 +/-    0.91  0.030 / 0.030
G22     307.6          63.8               11.0 +/-    0.73      12.1 +/-    0.73  0.110 / 0.260
G23     284.7          17.8               11.3 +/-    0.95      26.1 +/-    0.95  0.260 / 0.250
G25     41.9           11.8                9.3 +/-    1.71      24.9 +/-    1.71  0.060 / 0.100
G26     139.4          35.6               14.1 +/-    1.12      22.2 +/-    1.12  0.090 / 0.070
G31     41.5           61.9               10.4 +/-    0.40      11.6 +/-    0.40  0.060 / 0.060
G32     75.2           24.6               12.2 +/-    1.13      24.1 +/-    1.13  0.060 / 0.060