PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/13-09:12:50
G08     264.9          15.5                4.0 +/-    6.05       9.8 +/-    6.05  0.040 / 0.040
G10     71.4           55.9                3.9 +/-    0.69       4.6 +/-    0.69  0.040 / 0.060
G11     308.3          19.6                3.7 +/-    1.17       8.2 +/-    1.17  0.250 / 0.350
G14     273.3          65.4                4.3 +/-    0.41       4.7 +/-    0.41  0.190 / 0.380
G18     309.3          35.7                4.5 +/-    1.11       7.1 +/-    1.11  0.260 / 0.510
G20     107.8          12.3                3.6 +/-    2.24       9.5 +/-    2.24  0.120 / 0.490
G21     155.5          10.1                4.1 +/-    6.14      11.3 +/-    6.14  0.090 / 0.190
G27     227.2          11.8                5.1 +/-    1.57      13.7 +/-    1.57  0.110 / 0.220
G31     175.4          38.4                4.3 +/-    0.95       6.4 +/-    0.95  0.160 / 0.300
G32     1.3            70.0                4.3 +/-    0.45       4.6 +/-    0.45  0.140 / 0.240