PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/13-15:58:00
G01     39.9           14.8                8.1 +/-    2.50      20.2 +/-    2.50  0.050 / 0.060
G06     173.9          40.0               13.0 +/-    1.05      18.9 +/-    1.05  0.060 / 0.060
G13     235.6          21.8               13.1 +/-    2.15      27.6 +/-    2.15  0.230 / 0.210
G15     269.7          11.8               11.2 +/-    1.11      30.2 +/-    1.11  0.340 / 0.230
G17     356.2          71.5               11.0 +/-    0.57      11.6 +/-    0.57  0.030 / 0.030
G19     282.3          70.7               10.1 +/-    0.96      10.7 +/-    0.96  0.030 / 0.030
G24     316.1          19.6                8.3 +/-    2.10      18.4 +/-    2.10  0.030 / 0.040
G28     66.7           50.8               11.3 +/-    1.84      14.1 +/-    1.84  0.040 / 0.040
G30     154.4          25.3               11.9 +/-    1.38      23.2 +/-    1.38  0.170 / 0.230