PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/09-20:28:10
G01     39.2           13.5                9.3 +/-    0.98      23.9 +/-    0.98  0.040 / 0.080
G02     199.3          11.1                7.3 +/-   26.58      20.0 +/-   26.58  0.040 / 0.070
G06     175.4          40.7               16.5 +/-    1.08      23.7 +/-    1.08  0.270 / 0.230
G13     234.0          20.3               14.9 +/-    1.89      32.6 +/-    1.89  0.260 / 0.440
G15     267.1          11.1               13.3 +/-    2.69      36.3 +/-    2.69  0.060 / 0.080
G17     7.9            68.0               13.9 +/-    0.61      14.9 +/-    0.61  0.060 / 0.060
G19     287.7          70.8               14.3 +/-    0.69      15.0 +/-    0.69  0.080 / 0.190
G24     314.9          22.4               10.1 +/-    2.00      21.1 +/-    2.00  0.090 / 0.140
G28     71.1           48.8               12.4 +/-    0.40      15.9 +/-    0.40  0.080 / 0.200
G30     154.7          22.3               15.2 +/-    1.70      31.6 +/-    1.70  0.080 / 0.230