PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/09-13:57:40
G03     316.5          42.8                6.6 +/-    1.17       9.1 +/-    1.17  0.040 / 0.070
G11     242.9          14.9                6.8 +/-    2.38      17.0 +/-    2.38  0.280 / 0.110
G14     52.7           46.1                7.7 +/-    1.38      10.2 +/-    1.38  0.110 / 0.150
G18     225.3          31.3                7.3 +/-    2.34      12.4 +/-    2.34  0.550 / 0.250
G22     307.6          66.7                8.1 +/-    0.80       8.7 +/-    0.80  0.220 / 0.460
G25     43.7           13.0                6.1 +/-    3.10      15.9 +/-    3.10  0.260 / 0.560
G26     138.3          34.9               -1.7 +/-   28.71      -2.7 +/-   28.71  0.030 / 0.030
G31     42.6           61.0                7.6 +/-    0.57       8.5 +/-    0.57  0.090 / 0.060
G32     74.4           24.4                8.2 +/-    1.96      16.2 +/-    1.96  0.060 / 0.060