PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/01-01:43:10
G10     275.4          43.8               14.5 +/-    0.75      19.8 +/-    0.75  0.040 / 0.050
G13     38.8           11.9                8.9 +/-    1.54      23.8 +/-    1.54  0.050 / 0.040
G15     52.5           42.4               11.0 +/-    0.26      15.4 +/-    0.26  0.130 / 0.360
G20     311.6          62.7               12.8 +/-    0.69      14.2 +/-    0.69  0.210 / 0.400
G21     22.7           75.3               14.1 +/-    0.67      14.5 +/-    0.67  0.050 / 0.050
G24     115.0          18.2               20.6 +/-    1.28      47.5 +/-    1.28  0.050 / 0.060
G27     315.6          23.4                8.6 +/-    1.80      17.5 +/-    1.80  0.110 / 0.160
G29     167.2          23.0               14.8 +/-    1.67      30.3 +/-    1.67  0.090 / 0.180
G32     205.6          13.7               16.3 +/-    1.46      41.8 +/-    1.46  0.030 / 0.060