PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/22-10:42:40
G01     320.0          15.1                1.8 +/-    2.87       4.5 +/-    2.87  0.040 / 0.060
G08     264.3          14.6                4.6 +/-    1.58      11.5 +/-    1.58  0.040 / 0.060
G10     74.4           55.1                3.8 +/-    0.43       4.5 +/-    0.43  0.130 / 0.250
G11     307.2          20.2                4.6 +/-    1.92      10.1 +/-    1.92  0.280 / 0.330
G14     279.2          66.9                4.0 +/-    0.46       4.3 +/-    0.46  0.040 / 0.040
G18     308.0          37.0                3.4 +/-    2.75       5.1 +/-    2.75  0.040 / 0.040
G22     300.3          12.8                3.7 +/-    6.29       9.7 +/-    6.29  0.180 / 0.380
G27     225.8          10.6                4.5 +/-    4.29      12.5 +/-    4.29  0.170 / 0.470
G31     175.1          40.2                5.9 +/-    0.74       8.6 +/-    0.74  0.130 / 0.340
G32     4.9            68.8                4.6 +/-    0.35       4.9 +/-    0.35  0.100 / 0.320