PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/26-10:42:50
G01     317.5          21.2                5.1 +/-    2.72      10.9 +/-    2.72  0.070 / 0.180
G08     257.5          11.1                5.7 +/-    4.82      15.6 +/-    4.82  0.060 / 0.160
G10     85.9           51.0                7.0 +/-    1.05       8.7 +/-    1.05  0.040 / 0.040
G11     300.7          23.8                4.9 +/-    1.59       9.9 +/-    1.59  0.030 / 0.040
G14     299.1          69.3                6.7 +/-    0.56       7.1 +/-    0.56  0.210 / 0.340
G18     301.2          42.3                6.1 +/-    1.24       8.6 +/-    1.24  0.240 / 0.380
G22     304.1          18.3                4.2 +/-    2.75       9.5 +/-    2.75  0.270 / 0.220
G25     98.4           10.2               -0.9 +/-   23.54      -2.5 +/-   23.54  0.190 / 0.200
G31     172.9          48.4                8.9 +/-    1.18      11.4 +/-    1.18  0.150 / 0.130
G32     18.0           63.3                6.2 +/-    0.38       6.8 +/-    0.38  0.080 / 0.150