PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/12-17:57:40
G01     250.8          35.0               11.4 +/-    1.18      18.0 +/-    1.18  0.030 / 0.040
G03     315.7          47.0                8.6 +/-    1.91      11.3 +/-    1.91  0.030 / 0.040
G11     239.4          12.6               12.1 +/-    2.95      32.0 +/-    2.95  0.040 / 0.040
G14     59.7           41.7                8.8 +/-    0.52      12.5 +/-    0.52  0.040 / 0.050
G22     303.2          67.8                8.9 +/-    1.13       9.5 +/-    1.13  0.150 / 0.330
G23     287.5          20.6               10.9 +/-    1.72      23.7 +/-    1.72  0.120 / 0.390
G25     39.9           10.4                7.1 +/-    2.19      19.6 +/-    2.19  0.040 / 0.100
G26     135.5          38.5               11.8 +/-    0.94      17.6 +/-    0.94  0.040 / 0.090
G31     40.8           57.5                8.2 +/-    0.44       9.5 +/-    0.44  0.050 / 0.050
G32     78.1           22.1                8.0 +/-    0.71      16.6 +/-    0.71  0.060 / 0.060