PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/17-09:28:10
G02     225.6          70.1                6.5 +/-    0.82       6.8 +/-    0.82  0.030 / 0.030
G06     44.7           66.0                3.4 +/-    0.35       3.7 +/-    0.35  0.030 / 0.040
G12     321.4          47.4                4.6 +/-    1.49       6.0 +/-    1.49  0.040 / 0.060
G17     63.7           26.9                3.0 +/-    1.12       5.6 +/-    1.12  0.030 / 0.060
G19     49.8           41.9                3.9 +/-    0.84       5.5 +/-    0.84  0.040 / 0.060
G24     256.4          38.5                9.8 +/-    1.52      14.6 +/-    1.52  0.040 / 0.060
G28     125.8          15.0                7.0 +/-    2.20      17.5 +/-    2.20  0.090 / 0.240