PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/09-13:27:50
G08     291.0          23.8                4.8 +/-    1.22       9.7 +/-    1.22  0.120 / 0.100
G10     10.8           62.9                3.2 +/-    0.84       3.5 +/-    0.84  0.080 / 0.090
G14     230.2          48.0                6.8 +/-    2.05       8.8 +/-    2.05  0.040 / 0.020
G18     317.5          13.8                4.3 +/-    3.43      11.0 +/-    3.43  0.040 / 0.030
G20     66.6           51.7                5.5 +/-    1.31       6.7 +/-    1.31  0.070 / 0.080
G21     146.0          34.5                6.6 +/-    0.92      10.6 +/-    0.92  0.060 / 0.100
G24     53.4           23.3                3.5 +/-    2.35       7.2 +/-    2.35  0.150 / 0.140
G27     256.6          31.5                5.1 +/-    1.97       8.7 +/-    1.97  0.110 / 0.160
G32     244.5          65.4                5.8 +/-    0.36       6.4 +/-    0.36  0.230 / 0.300