PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/10-18:42:50
G01     81.9           32.6               12.9 +/-    1.36      21.4 +/-    1.36  0.050 / 0.160
G07     131.1          33.6               11.9 +/-    1.34      19.4 +/-    1.34  0.060 / 0.130
G11     60.6           36.5               11.0 +/-    1.20      16.9 +/-    1.20  0.110 / 0.150
G13     286.1          38.3               11.8 +/-    1.44      17.6 +/-    1.44  0.060 / 0.120
G15     310.0          13.0               12.6 +/-    2.23      32.8 +/-    2.23  0.040 / 0.050
G17     218.9          59.9               13.7 +/-    0.85      15.6 +/-    0.85  0.040 / 0.040
G18     55.8           21.3                9.3 +/-    2.28      19.8 +/-    2.28  0.040 / 0.080
G19     217.1          33.5               13.8 +/-    2.20      22.5 +/-    2.20  0.040 / 0.090
G28     351.1          61.6                9.9 +/-    0.66      11.1 +/-    0.66  0.090 / 0.300
G30     122.8          68.5               10.8 +/-    0.54      11.5 +/-    0.54  0.090 / 0.310