PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/22-14:42:30
G01     320.1          14.6                4.3 +/-    3.19      10.8 +/-    3.19  0.210 / 0.260
G08     263.6          14.9                5.0 +/-    3.06      12.5 +/-    3.06  0.280 / 0.310
G10     73.1           55.6                5.9 +/-    0.49       7.0 +/-    0.49  0.030 / 0.040
G11     308.6          19.0                5.6 +/-    1.14      12.5 +/-    1.14  0.030 / 0.030
G14     281.6          68.2                4.7 +/-    0.38       5.0 +/-    0.38  0.040 / 0.060
G27     225.9          10.9                7.0 +/-    1.08      19.3 +/-    1.08  0.040 / 0.060
G31     176.3          38.5                8.0 +/-    0.89      11.9 +/-    0.89  0.030 / 0.030
G32     1.3            69.7                5.5 +/-    0.25       5.9 +/-    0.25  0.030 / 0.020