PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/24-20:58:10
G06     178.6          25.3               19.6 +/-    1.79      38.0 +/-    1.79  0.240 / 0.290
G11     43.7           12.1                8.4 +/-    2.44      22.3 +/-    2.44  0.040 / 0.050
G13     246.8          29.4               16.4 +/-    2.25      29.1 +/-    2.25  0.040 / 0.050
G15     280.2          15.3               12.3 +/-    2.80      30.5 +/-    2.80  0.070 / 0.080
G17     330.4          77.8               11.4 +/-    0.43      11.7 +/-    0.43  0.070 / 0.090
G19     250.6          62.4               13.4 +/-    0.57      14.9 +/-    0.57  0.050 / 0.050
G24     318.5          11.0              -12.1 +/-   30.41     -32.9 +/-   30.41  0.050 / 0.040
G28     50.4           54.7               10.0 +/-    1.54      11.9 +/-    1.54  0.130 / 0.180
G30     150.4          37.0               15.5 +/-    0.54      23.8 +/-    0.54  0.120 / 0.200