PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/22-12:57:20
G08     310.4          17.8                3.9 +/-    1.78       9.1 +/-    1.78  0.040 / 0.060
G10     334.2          60.3                2.1 +/-    0.40       2.4 +/-    0.40  0.050 / 0.060
G14     219.2          30.7                4.5 +/-    2.14       7.7 +/-    2.14  0.130 / 0.210
G20     85.4           9.3                 2.7 +/-    8.01       7.6 +/-    8.01  0.100 / 0.140
G21     135.7          53.4                5.7 +/-    0.49       6.9 +/-    0.49  0.140 / 0.410
G24     72.8           30.2                4.0 +/-    0.81       7.0 +/-    0.81  0.130 / 0.680
G27     271.6          37.2                6.0 +/-    2.50       9.1 +/-    2.50  0.040 / 0.040
G32     225.0          54.7                4.9 +/-    2.43       5.9 +/-    2.43  0.030 / 0.040