PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/01-01:28:00
G08     291.4          23.5                7.4 +/-    1.26      14.9 +/-    1.26  0.050 / 0.030
G10     5.5            63.1                8.6 +/-    0.61       9.5 +/-    0.61  0.040 / 0.020
G14     230.5          48.3               14.1 +/-    2.12      18.1 +/-    2.12  0.060 / 0.020
G18     62.8           51.7               10.2 +/-    0.65      12.6 +/-    0.65  0.040 / 0.030
G21     146.0          39.4               13.0 +/-    1.77      19.1 +/-    1.77  0.050 / 0.080
G24     57.2           26.6                8.3 +/-    1.60      15.7 +/-    1.60  0.050 / 0.080
G27     252.4          31.3               11.5 +/-    3.18      19.7 +/-    3.18  0.040 / 0.040
G32     245.0          65.7               10.6 +/-    0.68      11.5 +/-    0.68  0.040 / 0.040