PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/26-10:42:40
G01     317.5          21.2                4.5 +/-    2.34       9.6 +/-    2.34  0.040 / 0.060
G08     257.5          11.1                5.3 +/-    1.26      14.4 +/-    1.26  0.040 / 0.050
G10     85.9           51.0                6.8 +/-    0.70       8.5 +/-    0.70  0.100 / 0.410
G11     300.7          23.8                5.0 +/-    1.88      10.0 +/-    1.88  0.090 / 0.390
G14     299.1          69.3                6.0 +/-    0.73       6.3 +/-    0.73  0.120 / 0.270
G18     301.2          42.3                6.5 +/-    0.80       9.1 +/-    0.80  0.120 / 0.220
G22     304.1          18.3                3.9 +/-    0.81       9.0 +/-    0.81  0.080 / 0.230
G25     98.4           10.2              -15.1 +/-   23.37     -41.9 +/-   23.37  0.080 / 0.250
G31     172.9          48.4                8.0 +/-    0.88      10.3 +/-    0.88  0.030 / 0.050
G32     18.0           63.3                5.1 +/-    0.73       5.7 +/-    0.73  0.040 / 0.050