PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/02-20:28:00
G01     46.9           23.0               10.5 +/-    0.59      21.4 +/-    0.59  0.180 / 0.490
G06     178.2          26.4               16.7 +/-    2.45      31.6 +/-    2.45  0.150 / 0.480
G11     43.6           11.5                9.5 +/-    1.99      25.5 +/-    1.99  0.040 / 0.060
G13     246.0          29.0               14.1 +/-    2.09      25.2 +/-    2.09  0.030 / 0.060
G15     279.5          15.2               12.3 +/-    2.12      30.4 +/-    2.12  0.160 / 0.350
G17     332.5          77.5               13.9 +/-    0.73      14.2 +/-    0.73  0.160 / 0.250
G19     252.2          63.1               14.5 +/-    0.55      16.0 +/-    0.55  0.040 / 0.040
G24     318.4          11.5                2.2 +/-   29.41       5.9 +/-   29.41  0.040 / 0.040
G28     51.4           54.5               12.1 +/-    0.36      14.5 +/-    0.36  0.040 / 0.030
G30     150.7          35.9               14.9 +/-    1.11      23.3 +/-    1.11  0.040 / 0.040