PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/17-15:27:30
G08     310.4          19.0                4.4 +/-    1.09      10.0 +/-    1.09  0.060 / 0.060
G10     332.7          60.3                5.4 +/-    0.36       6.1 +/-    0.36  0.080 / 0.070
G14     216.9          25.2                6.6 +/-    2.27      12.9 +/-    2.27  0.240 / 0.240
G20     40.7           58.9                5.9 +/-    0.77       6.8 +/-    0.77  0.160 / 0.210
G21     132.6          57.6                8.7 +/-    0.55      10.1 +/-    0.55  0.040 / 0.050
G24     77.6           30.7                7.9 +/-    0.64      13.7 +/-    0.64  0.030 / 0.040
G27     277.1          38.2                7.2 +/-    1.81      10.8 +/-    1.81  0.090 / 0.160
G32     220.8          52.5                7.7 +/-    1.63       9.4 +/-    1.63  0.090 / 0.140