PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/16-00:12:30
G02     225.1          69.2               12.2 +/-    0.49      13.0 +/-    0.49  0.060 / 0.080
G06     45.7           70.5               10.2 +/-    0.44      10.8 +/-    0.44  0.060 / 0.080
G12     319.6          40.8                9.1 +/-    0.43      13.1 +/-    0.43  0.040 / 0.050
G17     64.2           26.5                8.2 +/-    0.75      15.5 +/-    0.75  0.050 / 0.070
G19     48.1           43.7               10.3 +/-    1.39      14.1 +/-    1.39  0.040 / 0.070
G24     253.2          38.9               12.9 +/-    1.91      19.2 +/-    1.91  0.060 / 0.060
G28     126.6          11.3               13.9 +/-    3.08      37.7 +/-    3.08  0.330 / 0.360