PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/08-16:27:40
G01     38.1           11.6                7.8 +/-    2.88      21.0 +/-    2.88  0.040 / 0.060
G02     199.9          11.7                4.9 +/-   12.45      13.2 +/-   12.45  0.050 / 0.070
G06     173.0          44.6               10.7 +/-    0.90      14.6 +/-    0.90  0.160 / 0.380
G13     232.1          18.9               10.8 +/-    3.22      24.5 +/-    3.22  0.150 / 0.380
G17     5.7            68.1                8.9 +/-    0.72       9.5 +/-    0.72  0.090 / 0.200
G19     297.1          71.8                8.6 +/-    0.52       9.0 +/-    0.52  0.080 / 0.160
G24     314.4          23.1                8.6 +/-    1.64      17.6 +/-    1.64  0.030 / 0.040
G28     72.8           48.7               10.1 +/-    1.00      12.9 +/-    1.00  0.030 / 0.040
G30     155.3          20.8                9.2 +/-    1.42      19.9 +/-    1.42  0.060 / 0.060