PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/07-17:27:50
G08     300.9          22.7               10.2 +/-    2.64      21.0 +/-    2.64  0.050 / 0.060
G10     348.5          62.0                9.5 +/-    0.59      10.6 +/-    0.59  0.040 / 0.070
G14     222.4          38.4               12.3 +/-    1.31      18.4 +/-    1.31  0.030 / 0.030
G20     51.2           57.0               10.4 +/-    0.56      12.2 +/-    0.56  0.030 / 0.040
G21     140.5          46.8               14.2 +/-    0.69      18.7 +/-    0.69  0.050 / 0.120
G24     61.2           26.1               10.9 +/-    0.71      20.9 +/-    0.71  0.060 / 0.140
G27     268.1          35.3               12.1 +/-    1.60      19.1 +/-    1.60  0.090 / 0.170
G32     230.7          58.8               12.6 +/-    0.63      14.5 +/-    0.63  0.090 / 0.150