PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/02-12:13:00
G08     261.7          12.9                4.6 +/-    2.82      12.0 +/-    2.82  0.040 / 0.050
G10     80.2           53.2                5.0 +/-    0.67       6.0 +/-    0.67  0.040 / 0.040
G11     304.6          21.7                4.7 +/-    1.12      10.0 +/-    1.12  0.080 / 0.290
G14     290.6          68.9                4.2 +/-    0.64       4.5 +/-    0.64  0.100 / 0.230
G18     304.9          39.7                4.2 +/-    1.93       6.1 +/-    1.93  0.080 / 0.230
G22     301.8          14.2                3.6 +/-    2.80       9.2 +/-    2.80  0.090 / 0.220
G31     174.4          44.0                7.5 +/-    0.99      10.2 +/-    0.99  0.140 / 0.220
G32     11.4           66.2                4.2 +/-    0.38       4.6 +/-    0.38  0.130 / 0.260