PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/20-16:42:50
G01     56.3           28.7                9.0 +/-    1.15      16.2 +/-    1.15  0.050 / 0.060
G07     142.7          15.2               11.9 +/-    2.11      29.4 +/-    2.11  0.040 / 0.050
G11     46.6           21.3               10.4 +/-    3.71      22.2 +/-    3.71  0.230 / 0.380
G13     257.7          34.8               13.0 +/-    2.03      20.7 +/-    2.03  0.220 / 0.220
G15     290.4          16.5               12.5 +/-    1.18      30.1 +/-    1.18  0.130 / 0.250
G17     265.4          76.8               13.8 +/-    0.54      14.2 +/-    0.54  0.210 / 0.420
G18     39.6           10.1                8.2 +/-    2.23      23.0 +/-    2.23  0.090 / 0.170
G19     235.4          54.5               14.0 +/-    2.14      16.7 +/-    2.14  0.090 / 0.140
G28     31.4           58.5               12.0 +/-    0.80      13.8 +/-    0.80  0.030 / 0.010
G30     145.2          46.5               13.8 +/-    1.07      18.2 +/-    1.07  0.040 / 0.020