PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/07-13:27:50
G02     60.6           31.0                3.1 +/-    1.03       5.4 +/-    1.03  0.030 / 0.040
G05     60.2           64.4                3.2 +/-    0.72       3.5 +/-    0.72  0.030 / 0.020
G12     181.6          29.9                6.0 +/-    0.68      10.5 +/-    0.68  0.080 / 0.130
G13     126.0          15.3                7.7 +/-    1.70      19.0 +/-    1.70  0.090 / 0.110
G15     161.6          14.1                6.7 +/-    3.27      17.0 +/-    3.27  0.110 / 0.060
G21     272.3          17.5                4.2 +/-    4.00       9.9 +/-    4.00  0.090 / 0.070
G25     236.2          51.7                6.6 +/-    2.84       8.2 +/-    2.84  0.050 / 0.040
G29     328.4          54.1                4.1 +/-    0.59       4.9 +/-    0.59  0.040 / 0.040