PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/20-19:42:50
G02     225.3          67.9               13.2 +/-    1.00      14.1 +/-    1.00  0.180 / 0.330
G06     45.0           67.4               11.2 +/-    0.40      12.0 +/-    0.40  0.190 / 0.360
G12     319.8          41.5               10.7 +/-    0.45      15.2 +/-    0.45  0.050 / 0.050
G17     62.8           28.5                8.2 +/-    1.73      14.8 +/-    1.73  0.040 / 0.060
G19     49.0           42.9               10.8 +/-    1.00      15.0 +/-    1.00  0.080 / 0.040
G24     254.7          38.7               13.7 +/-    0.69      20.3 +/-    0.69  0.060 / 0.050
G28     126.4          12.3               13.6 +/-    3.49      36.0 +/-    3.49  0.050 / 0.020